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Finding the Fourth Proportional to 243.87, 336.48 and 149.37

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Solution

The fourth proportional to 243.87, 336.48 and 149.37 is: 206.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.87 : 336.48 = 149.37 : x
  2. Step 2: Convert to fraction form
    243.87/336.48 = 149.37/x
  3. Step 3: Cross multiply
    243.87x = 336.48 × 149.37
  4. Step 4: Simplify right side
    243.87x = 50,260.02
  5. Step 5: Solve for x
    x = 50,260.02/243.87
  6. Step 6: Final answer
    x = 206.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.